The story of Lilith and her connection to vampires begins thousands of years ago. The Hebrew word in Isaiah ("lylyth") sometimes translated as Lilith does not refers to any single entity but a type of demon. The earliest reference to a Lilith dates from 2400 BCE. A list of Sumerian kings identifies a "lillu"-demon (or incubus) as the father (not the mother) of Gilgamesh. The feminine form was "lilitu", a class of demoness figures which included "ardat lili" (handmaidens of Lilith) and "Irdu Lili" (thought to mate with men at night). The vampiric qualities of the "lillu" and "lilitu" are that they were believed to "drain" their victims, albeit not their victims' blood. In later Jewish traditions, the figure of Lilith solidified. In the Talmud (BT Sabbath 151b) she is said to be responsible for men's erotic dreams. More importantly, the Rabbinic commentary on Genesis and its account of Eve's creation includes remarks (cf. Midrash Rabbah 18:4) about two "Eves" in an apparent attempt to correct what was perceived as the implication of two creations in the Hebrew text. Later, in medieval writings such as the Zohar and the Chronicles of Jerahmeel, Lilith is said to have mated with Adam and produced a demonic offspring of some kind. The combination of Jewish folklore or legendary accounts and the vampiric quality of the demon Lilith whom (according to these accounts) Adam mated along with the resulting "demonic" offspring enabled the modern conceptions of Lilith as the original creator of vampires.
The language the authority vampires are speaking at the end of the episode does not correspond to any single language. Most of the chant is derived from ancient Hebraic dialects (such as Aramaic). However, certain words (e.g., "nama(n)" for name) are not semitic but Indo-European, and were probably taken from Sanskrit, although it is difficult in some instances to say with certainty. The phonological similarities between the few words which do not correspond to anything in Hebrew are not necessarily unique to a single ancient Indo-European language. The word for "name" could be Sanskrit or be taken from certain Germanic languages such as Gothic. Other words, such as the word for "eternal", are either Sanskrit or are corruptions of Indo-European or Semitic words.